I feel like this episode was made for the Sesame purists who don't like the changes they made to the set. I'm sure they would like to see the old set acknowledged in this episode. This was fun for what it was.
I agree. But yeah, I disagree with the comment, "There's no Fix-It Shop on Sesame Street." Like Oscarfan said, the Fix-It Shop was in Abby's debut episode and Elmo definitely would have remembered as well.
Though I do like that they acknowledged where Big Bird's nest used to be and where Oscar's trashcan used to be and the garage doors. After all they still play repeat street sceens from the pre-HBO era so it's nice to get a bit of an explanation there.